Subgraphs are a feature that let your group objects in a way that's collapsible,…and this is convenient if your diagram is getting a little crowded.…You can see in this diagram that we have a sitemap but the content is starting…to get a little crowded at the bottom, and it's actually going off the page, and…subgraphs can help us with this problem.…I am going to start by selecting the objects that I want to put in a subgraph…and I'm going to use a Marquee and I'm going to select things that are already…logically in a section.…This would be the About section of the website.…

Now I'm going to go to the Arrange menu and Group as Subgraph.…You see that as soon as I do this, I get a new box around the group and that has…a name and by default, it's called Subgraph, but I can type into that and change…it to something appropriate which is the name of the section, About.…Now a subgraph is not just a regular group or a regular object because if I…right-click it, I can collapse the Subgraph.…If we continue this process with the other sections of the website, I bet we can…

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1/15/2010

In OmniGraffle Professional 5 Essential Training, Jason Osder shows how to go from idea to fully developed illustration with this powerful diagramming tool for the Mac. OmniGraffle is designed to handle everything from diagrams, process charts, and web site mockups, to page layouts, and even info-rich map graphics. Jason demonstrates how to organize this wide variety of documents using canvases and layers, and work with basic diagram elements such as shapes, lines, and text. He also shares timesaving techniques, such as using pre-made stencils, snapping for auto alignment, and auto layouts, so users can create documents quickly and efficiently. Advanced skills for the professional user are also introduced, including adding interactivity and developing custom shapes. Exercise files are included with this course.